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  • 1
    Electronic Resource
    Electronic Resource
    Fluctuation in the zooplankton community in two solar salt ponds, Aveiro, Portugal (1995)
    Springer
    International journal of salt lake research 4 (1995), S. 327-333 
    Details
    ISSN: 1573-8590
    Keywords: density ; diversity ; fluctuation ; hypersaline ecosystems ; salt ponds ; zooplankton
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Geography
    Notes: Abstract The zooplankton of two salt ponds at Aveiro was studied to evaluate its density and diversity. Samples were collected biweekly from the salt ponds Esmolas and Tanoeiras. Samples were first separated into Holoplankton (Copepoda, nauplii,Acartia, Ostracoda and Anostraca) and Meroplankton (Mollusca, Insecta, annelidan larvae and Ichthyoplankton). The Holoplankton was mainly composed of:Acartia tonsa, Acartia sp.,Eurytemora velox, Artemia sp., and harpacticoids and calanoids. In both salt ponds, species diversity was identical, but total zooplankton density was higher in the Tanoeiras salt pond, probably because its physical and chemical characteristics allowed the development of stable communities.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01999116
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  • 2
    Electronic Resource
    Electronic Resource
    The invertebrate benthic community of two solar salt ponds in Aveiro, Portugal (1996)
    Springer
    International journal of salt lake research 5 (1996), S. 281-286 
    Details
    ISSN: 1573-8590
    Keywords: benthic community ; density ; diversity ; salt ponds
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Geography
    Notes: Abstract The invertebrate benthic community of two Aveiro salt pond systems was studied in order to evaluate its diversity, density and the influence of organic matter and salt production. Samples were collected monthly at Esmolas and Tanoeiras. Five groups of benthic organisms were found: Nemathelminthes, Annelida (Nereis diversicolor), Crustacea (Sphaeroma serratum andTanais cavolini), Insecta (Chironomidae), Bivalvia Mollusca (Cerastoderma edule, Spisula solida andMya arenaria) and Gasteropoda Mollusca (Hydrobia ulvae, Cingulla cingullus, Cingulla semistriata, Odostomia rissoides, Odostomia unidentata, Scrobicularia alba, Valvata cristata andPaludestrina acuta). The highest density of the benthic community was observed during the non-productive season in all but the crystallizing pond systems. In both salt ponds, salinity acted as limiting factor. The dominant group was Gasteropoda, although high densities of Bivalvia were recorded in some ponds. In the feeder pond and the channels, species diversity was highest in the Tanoeiras salt pond, probably because its physical and chemical characteristics allowed the development of stable communities.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01995382
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  • 3
    Electronic Resource
    Electronic Resource
    Biogeography of the genusArtemia (Crustacea, Branchiopoda, Anostraca) in Spain (1994)
    Springer
    International journal of salt lake research 3 (1994), S. 175-190 
    Details
    ISSN: 1573-8590
    Keywords: Artemia ; biogeography ; hypersaline ecosystems ; Spanish populations ; adult morphology
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Geography
    Notes: Abstract This is an updated study on the biogeographic distribution of the populations of the genusArtemia (Branchiopoda, Anostraca) in Spain, with special focus on populations inhabiting salt lagoons and inland salterns. The populations recorded (40) belong to the bisexual speciesA. tunisiana and to the asexual groupA. parthenogenetica (diploid and tetraploid strains). They usually appear in three different hypersaline ecosystems: solar salterns and lagoons filled with sea water, solar salterns and lagoons containing brines of diluted mineral salts, and lagoons filled with athalassic (endorheic) brines. The brines in salinas are chemically characterized by high Cl− concentrations, especially in inland salinas, whose brine sources are geologically associated with evaporitic formations developed in the Triassic and Lower Liassic of eastern Spain. Brines in athalassic lagoons, geologically associated with Mesozoic and Cenozoic periods, show higher levels of sulfate (up to 40–50%) as well as Mg2+. From a geographical point of view, bisexual and diploid asexual populations are mainly found in coastal and inland salinas or lagoons below 40° N, while asexual tetraploid populations are found in inland salinas and athalassic lagoons above that latitude. These populations have been biologically characterized by the morphology of their adults through multivariate analysis.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01990493
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